How can you write the expression with a ratio with a rationalized denominator 2+sqrt5/2-sqrt5

What is the number that the 12th power divided by the 9th power that equals to 64?

Chocolate costing $10 per pound is mixed with nuts costing $4 per pound to make a mixture costing $6 per pound. What fraction of the mixture's weight is chocolate? Express your answer as a common fraction.

96 laps in 8 miles in each mile

a pair of boots regulary priced 129.99 was marked down to 35.99 during the end of season sale. What is the percent of discount?

The length of a rectangle is twice its width. If the perimeter of the rectangle is 48 centimeters, find the value of the length of the rectangle.

2 (x-1) + 6x=4 (?-1) + 2 how to make this infinitely many solutions

Evaluate 7 + (-4*^2) for * = 0

As part of school project, Lizzie must cover the surface of a cube with colored paper. The height of the cube is 2.5 inches. How much paper does Lizzie need?

What were two of Barrington Irving's first big dreams?

A kitchen is 12 ft. by 14 ft. with 10 ft. high walls. How much would it cost to put vinyl flooring in this room? Cost = $